Charge self-regulation in 1T'''-MoS2 structure with rich S vacancies for enhanced hydrogen evolution activity

Xiaowei Guo, Erhong Song, Wei Zhao, Shumao Xu, Wenli Zhao, Yongjiu Lei, Yuqiang Fang, Jianjun Liu () and Fuqiang Huang ()
Additional contact information
Xiaowei Guo: Shanghai Institute of Ceramics, Chinese Academy of Sciences
Erhong Song: Shanghai Institute of Ceramics, Chinese Academy of Sciences
Wei Zhao: Shanghai Institute of Ceramics, Chinese Academy of Sciences
Shumao Xu: Shanghai Institute of Ceramics, Chinese Academy of Sciences
Wenli Zhao: Nanjing Tech University
Yongjiu Lei: King Abdullah University of Science and Technology (KAUST)
Yuqiang Fang: Shanghai Institute of Ceramics, Chinese Academy of Sciences
Jianjun Liu: Shanghai Institute of Ceramics, Chinese Academy of Sciences
Fuqiang Huang: Shanghai Institute of Ceramics, Chinese Academy of Sciences

Nature Communications, 2022, vol. 13, issue 1, 1-9

Abstract: Abstract Active electronic states in transition metal dichalcogenides are able to prompt hydrogen evolution by improving hydrogen absorption. However, the development of thermodynamically stable hexagonal 2H-MoS2 as hydrogen evolution catalyst is likely to be shadowed by its limited active electronic state. Herein, the charge self-regulation effect mediated by tuning Mo−Mo bonds and S vacancies is revealed in metastable trigonal MoS2 (1T'''-MoS2) structure, which is favarable for the generation of active electronic states to boost the hydrogen evolution reaction activity. The optimal 1T'''-MoS2 sample exhibits a low overpotential of 158 mV at 10 mA cm−2 and a Tafel slope of 74.5 mV dec−1 in acidic conditions, which are far exceeding the 2H-MoS2 counterpart (369 mV and 137 mV dec−1). Theoretical modeling indicates that the boosted performance is attributed to the formation of massive active electronic states induced by the charge self-regulation effect of Mo−Mo bonds in defective 1T'''-MoS2 with rich S vacancies.

Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

Downloads: (external link)
https://www.nature.com/articles/s41467-022-33636-8 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-33636-8

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-022-33636-8

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().